73 lines
3.7 KiB
C
73 lines
3.7 KiB
C
/*
|
|
* Copyright (c) 2020 - 2023, Nordic Semiconductor ASA
|
|
* All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
|
|
* contributors may be used to endorse or promote products derived from this
|
|
* software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
*/
|
|
|
|
#ifndef NRF_802154_NRFX_ADDONS_H__
|
|
#define NRF_802154_NRFX_ADDONS_H__
|
|
|
|
#include "nrfx.h"
|
|
#include "nrf_802154_const.h"
|
|
|
|
/* The usage of ED_RSSISCALE is described imprecisely in the nRF product specifications. The meaning of
|
|
this constant is the following: If we calculate ed_scaled = EDSAMPLE * ED_RSSISCALE, then
|
|
it is guaranteed that in the range 0-255 ed_scaled maps linearly to the ED power in dBm. This means,
|
|
that the maximum value in EDSAMPLE which can be reported in compliance with the 802.15.4 specification is
|
|
255/ED_RSSISCALE. */
|
|
|
|
#if defined (NRF52833_XXAA) || defined(NRF5340_XXAA)
|
|
#define ED_RSSIOFFS (-93) ///< dBm value corresponding to value 0 in the EDSAMPLE register.
|
|
#define ED_RSSISCALE 5 ///< Factor needed to calculate the ED result based on the data from the RADIO peripheral.
|
|
#else
|
|
#define ED_RSSIOFFS (-92) ///< dBm value corresponding to value 0 in the EDSAMPLE register.
|
|
#define ED_RSSISCALE 4 ///< Factor needed to calculate the ED result based on the data from the RADIO peripheral.
|
|
#endif
|
|
|
|
#define EDSAMPLE_MIN_REPORTED_VALUE (PHY_MIN_RECEIVER_SENSITIVITY - ED_RSSIOFFS + 10) ///< Minimal reported EDSAMPLE value (reported as 0)
|
|
#define EDSAMPLE_MAX_REPORTED_VALUE (ED_RESULT_MAX / ED_RSSISCALE) ///< Maximal reported EDSAMPLE value (reported as 255)
|
|
|
|
/**
|
|
* @brief Converts the energy level received during the energy detection procedure to a dBm value.
|
|
*
|
|
* @param[in] energy_level Energy level value compliant with the 802.15.4 specification (0-255)
|
|
*
|
|
* @return Result of the energy detection procedure in dBm.
|
|
*/
|
|
static inline int8_t nrf_802154_addons_dbm_from_energy_level_calculate(uint8_t energy_level)
|
|
{
|
|
return ((int16_t)(EDSAMPLE_MAX_REPORTED_VALUE - EDSAMPLE_MIN_REPORTED_VALUE) *
|
|
((int16_t)energy_level)) /
|
|
ED_RESULT_MAX + EDSAMPLE_MIN_REPORTED_VALUE + ED_RSSIOFFS;
|
|
}
|
|
|
|
#endif // NRF_802154_NRFX_ADDONS_H__
|